发表新帖
发表新帖

WPF: TreeViewItem bound to an ICommand

后端 未结
关注
6 638
离开以前
离开以前 2021-02-08 19:24

I am busy creating my first MVVM application in WPF.

Basically the problem I am having is that I have a TreeView (System.Windows.Controls.TreeView) which I have placed

6条回答
  • 无人共我
    无人共我 (楼主)
    2021-02-08 19:30

    I improve good solution from Richard via common Tag property:

    MyView.xaml:

    MyView.xaml.cs

        private void TreeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs e)
    {
        var treeView = (TreeView)sender;
        var command = (ICommand)treeView.Tag;
        TreeViewItem selectedItem = (TreeViewItem)treeView.SelectedItem;
        if (selectedItem.Tag != null)
        {
            command.Execute(selectedItem.Tag);
        }
    }



    


    MyViewModel.cs
    


          public RelayCommand selectTreeViewCommand;
      [Bindable(true)]
      public RelayCommand SelectTreeViewCommand => selectTreeViewCommand ?? (selectTreeViewCommand = new RelayCommand(CanSelectTreeViewCommand, ExecuteSelectTreeViewCommand));

      private void ExecuteSelectTreeViewCommand(object obj)
      {
          Console.WriteLine(obj);
      }

      private bool CanSelectTreeViewCommand(object obj)
      {
          return true;
      }

    
    
    
             
    
                                                        
    
            
            
    
              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              
    
                          
             
       
          
              
    
                                       
    

    

                
    
                         
          
                              			
        
        
        
    
          
    
            
            
    
              
              
    
            
    


                                 
              
    
            
    
                          
    

        
         
    
                
                
    
                  
                
    
                
    
                   看不清?
                
    
              
    
                                  
    
                    
   
                 
             
              
    提交回复
    
            
    
          
    
        
    
      
       
      
    
    
    
          
 
     
 
    
        
    热议问题